Sources:

• http://forum.xda-developers.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445
• http://www.androidpolice.com/2016/09/11/guide-play-pokemon-go-0-37-rooted-android-magisk/
• https://www.reddit.com/r/pokemongodev/comments/57dpyb/get_pokemon_back_to_work_in_latest_safetynet/
• http://forum.xda-developers.com/apps/magisk/discussion-pokemon-magisk-discussion-t3465722/page109
• https://www.reddit.com/r/pokemongodev/comments/53ood1/migrate_from_magisk_phhs_superuser_xposed/

Download:

• SuperSU v2.78 SR1 : https://download.chainfire.eu/1003/SuperSU/SR1-SuperSU-v2.78-SR1-20160915123031.zip
• SuHide 0.55 : http://forum.xda-developers.com/apps/supersu/suhide-t3450396

Procedure:

• Flasher SuperSU
• Dans un terminal avec TWRP taper:

  echo "SYSTEMLESS=true" > /data/.supersu

• Flasher suhide
• Reboot